CN108144443A - A kind of powdered activated coke combined desulfurization and the system and method for denitration - Google Patents
A kind of powdered activated coke combined desulfurization and the system and method for denitration Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
- B01D53/10—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds with dispersed adsorbents
- B01D53/12—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds with dispersed adsorbents according to the "fluidised technique"
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
The invention discloses a kind of system and methods of powdered activated coke fluid-bed sweetening spray ammonia combined denitration, include the following steps：1) flue gas after dedusting is flowed into fluid-bed sweetening tower, is contacted with the powder activity coke after carrying sulphur activated coke and being catalyzed, by the sulfur dioxide adsorbing and removing in flue gas；2) flue gas after desulfurization is after gas solid separation, into fluidized bed denitration tower, and adds ammonia and powder activity coke thereto, by the nitrogen oxides in powder activity coke catalysis ammonia reduction flue gas into nitrogen, so as to remove nitrogen oxides；3) flue gas after denitration is sent to chimney after flowing through the second gas-solid separator and bag filter separation, the isolated load sulphur coke of first gas-solid separator, which is recycled in fluid-bed sweetening tower, to be recycled, the isolated cycle coke of second gas-solid separator, which is recycled in fluidized bed denitration tower, to be recycled, and the powder activity coke after the isolated catalysis of bag filter, which is added, carries out desulfurization into fluid-bed sweetening tower.
Description
Technical field
The present invention relates to combustion product gases pollutant removing fields, and in particular to a kind of powdered activated coke combined desulfurization and denitration
System and method.
Background technology
Active coke desulphurizing is a kind of flue gas desulfurization technique of resourcebility, while to pollutants such as the heavy metals in flue gas
There is apparent cooperation-removal to act on.Active coke desulphurizing technology currently on the market is mainly using moving bed absorption-heating regeneration work
Skill route, moving bed absorbing process use the amorphous pellets activated coke of higher mechanical strength, and shape is generally Φ 5-9mm diameters
Column.Powder activity coke fluidised bed adsorption desulfurization is a kind of novel active coke sulfur removal technology route, and the technique is with Powdered Activated Carbon
For adsorbent, sulfur dioxide realization sweetening process is adsorbed in circulating fluid bed reactor.Activated coke as a kind of porous material,
It is a kind of catalyst that can realize the selective catalytic denitrification process at low temperature, but activated coke is to nitric oxide production adsorbing and removing energy
Power is weaker.At present, activated coke moving bed sulfur removal technology is made generally by spraying into ammonia after desulfurization using the catalysis of activated coke
With nitrogen oxides being reduced to nitrogen, Shandong University applied for a patent a kind of fluidized activated carbon combined desulfurization and denitrification in 2010
Technique (201010189427.2) realizes powdered activated coke fluidized-bed process by spraying into ammonia on fluid-bed sweetening tower top
Combined desulfurization and denitration.Since activated coke is poor to nitrogen oxide absorbent ability, sulfur dioxide is with nitrogen oxides on activated coke surface
Competitive Adsorption can inhibit absorption of the nitrogen oxides on activated coke surface, when sulfur dioxide and nitrogen oxides exist simultaneously, meeting
Preferential adsorption sulfur dioxide.The ability for having adsorbed the activated coke catalysis ammonia nitrogen oxides reduction of sulfur dioxide substantially weakens, together
When, ammonia can react generation ammonium sulfate with having adsorbed the activated coke of sulfur dioxide and cause the blocking in activated coke gap, and cause ammonia
The effective rate of utilization of gas reduces.The spray ammonia combined desulfurization and denitrification process of moving bed process, although can be to avoid absorption sulfur dioxide
The problem of activated coke denitration efficiency is caused to reduce, but also exist simultaneously that activated coke loadings are larger, and denitration efficiency is more low asks
Topic.Shenhua Group Co and Shandong University applied for a kind of flue gas desulphurization system equal to 2016
(201611187075.0), ensure the work Sulfur capacity of smoke desulfurization efficiency and adsorbent, the hair by designing two-step desulfurization tower
Bright emphasis considers active coke desulphurizing process, is not directed to denitrification process.In the present invention, desulfurizing tower and denitrating tower are separately designed, is passed through
After the classified utilization of activated coke, fresh activity coke is controlled to be catalyzed gametic fertility, it is sent into desulfurizing tower and carries out absorption desulfurization.
Invention content
Technical problem present in for the above-mentioned prior art, an object of the present invention are to provide a kind of powdered activated coke
Combined desulfurization and the system of denitration.By setting fluid-bed sweetening tower and denitrating tower, fresh activity coke is made full use of in denitrating tower
With the catalytic action on bag filter filtering layer, catalysis ammonia reduction removing nitrogen oxides is realized.
In order to solve problem above, the technical scheme is that：
A kind of powdered activated coke combined desulfurization and the system of denitration, including fluid-bed sweetening tower, fluidized bed denitration tower, spray ammonia
Device, activated coke warehouse, the first gas-solid separator, the second gas-solid separator and bag filter, wherein,
The air inlet of the fluid-bed sweetening tower is connect with flue gas source, the gas outlet of fluid-bed sweetening tower and the first gas-solid point
Air inlet connection from device, the gas outlet of the first gas-solid separator are connect with the air inlet of fluidized bed denitration tower, fluidized bed denitration
The gas outlet of tower is connect with the air inlet of the second gas-solid separator, the gas outlet of the second gas-solid separator and cloth bag separator into
Gas port connects, and the solid outlet of the second gas-solid separator is connect with the bottom of fluidized bed denitration tower, and the solid of cloth bag separator goes out
Mouth is connect with the bottom of fluid-bed sweetening tower；
Activated coke warehouse is connect with fluidized bed denitration tower, and ammonia-gas spraying device is connect with fluidized bed denitration tower；Ammonia is lived in powder
Property burnt catalytic action under the nitrogen oxides in the flue gas after desulfurization is reduced into nitrogen, so as to carry out denitration；Cigarette after denitration
The powder activity coke carried in gas is detached successively by the second gas-solid separator and cloth bag separator, is separately recovered to fluidized bed denitration
It is recycled in fluid-bed sweetening tower.
By the flue gas after dedusting in fluid-bed sweetening tower after desulfurization, the content of sulfur dioxide in flue gas be down to it is very low, then
Into in fluidized bed denitration tower during denitration, the ability that ammonia nitrogen oxides reduction will not be catalyzed to fresh powder activity coke causes
It influences, and then the denitration efficiency of powder activity coke can be improved.
Using the method denitration that ammonia and fresh powder activity coke are sprayed into flue gas, fresh activity can be made full use of
Burnt catalytic effect, so as to improve the denitration efficiency of flue gas.And found through overtesting, powder activity after catalytic denitration is burnt
When being recycled to the progress desulfurization of fluid-bed sweetening tower, adsorption efficiency of the powder activity coke to sulfur dioxide is had no effect on, improves activity
Burnt service efficiency.
The present invention is divided the powder activity coke that the flue gas after denitration is carried out using the second gas-solid separator for the first time
From the powder activity coke after first separation is recycled back in fluid bed denitrating tower, the powder that bag filter is carried out flue gas
Activated coke carries out secondary separation, and desulfurization, i.e., second are carried out in the powder activity coke circulating reflux fluidized bed desulfurizing tower after secondary separation
The synergistic effect of gas-solid separator and bag filter realizes the stabilization of the amount of powder activated coke in desulfurizing tower and denitrating tower, protects
It demonstrate,proves desulfurization and stablizing for denitration carries out.
During bag filter separated powder activated coke, it can persistently be formed in filter material surface and update powder activity coke
Filtering layer, the filtering layer and flue gas continuous contact can further adsorb the sulfur dioxide in flue gas, and be catalyzed ammonia nitrogen oxides reduction
As nitrogen, the efficiency of flue gas desulfurization and denitrification is on the one hand improved, on the other hand, the effective rate of utilization of activated coke can be improved.
The second object of the present invention is to provide the method for carrying out combined desulfurization and denitration to flue gas using above system, including
Following steps：
1) flue gas after dedusting is flowed into fluid-bed sweetening tower, the load sulphur activated coke and cloth that are detached with the first gas-solid separator
Powder activity coke contact after the catalysis of bag dust collector separation, by the sulfur dioxide adsorbing and removing in flue gas；
2) flue gas after desulfurization into fluidized bed denitration tower, and adds ammonia and powder thereto after gas solid separation
Activated coke, by the nitrogen oxides in powder activity coke catalysis ammonia reduction flue gas into nitrogen, so as to remove nitrogen oxides；
3) flue gas after denitration is sent to chimney, the first gas-solid point after flowing through the second gas-solid separator and bag filter separation
The load sulphur coke isolated from device, which is recycled in fluid-bed sweetening tower, to be recycled, the isolated cycle of the second gas-solid separator
Coke is recycled in fluidized bed denitration tower and recycles, and the powder activity coke after the isolated catalysis of bag filter is added to stream
Desulfurization is carried out in fluidized bed desulfurizing tower.
Beneficial effects of the present invention are：
For the present invention using powdered activated coke as adsorbent, adsorbent operating cost is low.
Beneficial effects of the present invention are：
1. powdered activated coke of the present invention is simultaneously as desulfuration adsorbent and denitrating catalyst.
2. the powder activity coke of the present invention first carries out catalytic denitration, absorption desulfurization is being carried out, is improving powder activity coke
Utilization rate reduces fume treatment cost.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.
Fig. 1 is the structure diagram of the system of ozone oxidization combination desulfurization and the denitration of the present invention.
Wherein, 1, cyclone separator, 2, fluid-bed sweetening tower, 3, bag filter, 4, fluidized bed denitration tower, 5, activated coke
Warehouse, 6, ammonia-gas spraying device.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, powder activity coke processing flue gas exists in the prior art and is difficult to realize remove simultaneously
The deficiency of sulfur dioxide and nitrogen oxides, the technical issues of in order to solve as above, present applicant proposes a kind of powdered activated coke streams
Fluidized bed desulfurizing sprays the system and method for ammonia combined denitration.
A kind of exemplary embodiment of the application, the system for providing a kind of powdered activated coke combined desulfurization and denitration, packet
Include fluid-bed sweetening tower, fluidized bed denitration tower, ammonia-gas spraying device, activated coke warehouse, the first gas-solid separator, the second gas-solid separator
And bag filter, wherein,
The air inlet of the fluid-bed sweetening tower is connect with flue gas source, the gas outlet of fluid-bed sweetening tower and the first gas-solid point
Air inlet connection from device, the gas outlet of the first gas-solid separator are connect with the air inlet of fluidized bed denitration tower, fluidized bed denitration
The gas outlet of tower is connect with the air inlet of the second gas-solid separator, the gas outlet of the second gas-solid separator and cloth bag separator into
Gas port connects, and the solid outlet of the second gas-solid separator is connect with the bottom of fluidized bed denitration tower, and the solid of cloth bag separator goes out
Mouth is connect with the bottom of fluid-bed sweetening tower；
Activated coke warehouse is connect with fluidized bed denitration tower, and ammonia-gas spraying device is connect with fluidized bed denitration tower；Ammonia is lived in powder
Property burnt catalytic action under the nitrogen oxides in the flue gas after desulfurization is reduced into nitrogen, so as to carry out denitration；Cigarette after denitration
The powder activity coke carried in gas is detached successively by the second gas-solid separator and cloth bag separator, is separately recovered to fluidized bed denitration
It is recycled in fluid-bed sweetening tower.
By the flue gas after dedusting in fluid-bed sweetening tower after desulfurization, the content of sulfur dioxide in flue gas be down to it is very low, then
Into in fluidized bed denitration tower during denitration, the ability that ammonia nitrogen oxides reduction will not be catalyzed to fresh powder activity coke causes
It influences, and then the denitration efficiency of powder activity coke can be improved.
Using the method denitration for spraying into ammonia and fresh powder activity coke into flue gas, can prevent from carrying the resistance of sulphur activated coke
Hinder the catalytic effect of powder activity coke, so as to improve the denitration efficiency of flue gas.And found through overtesting, after catalytic denitration
When powder activity coke is recycled to the progress desulfurization of fluid-bed sweetening tower, has no effect on powder activity coke and the absorption of sulfur dioxide is imitated
Rate improves the service efficiency of activated coke.
The application is divided the powder activity coke that the flue gas after denitration is carried out using the second gas-solid separator for the first time
From the powder activity coke after first separation is recycled back in fluid bed denitrating tower, the powder that bag filter is carried out flue gas
Activated coke carries out secondary separation, and desulfurization, i.e., second are carried out in the powder activity coke circulating reflux fluidized bed desulfurizing tower after secondary separation
The synergistic effect of gas-solid separator and bag filter realizes the stabilization of the amount of powder activated coke in desulfurizing tower and denitrating tower, protects
It demonstrate,proves desulfurization and stablizing for denitration carries out.
During bag filter separated powder activated coke, it can persistently be formed in filter material surface and update powder activity coke
Filtering layer, the filtering layer and flue gas continuous contact can further adsorb the sulfur dioxide in flue gas, and be catalyzed ammonia nitrogen oxides reduction
As case, the efficiency of flue gas desulfurization and denitrification is on the one hand improved, on the other hand, the effective rate of utilization of activated coke can be improved.
Preferably, first gas-solid separator is cyclone separator.
It is further preferred that the air outlet of first gas-solid separator is located at the bottom of the first gas-solid separator.Due to
The air outlet of fluid-bed sweetening tower is located at the top of desulfurizing tower, has higher height, and the air inlet of fluidized bed denitration tower herein
Mouth is located at bottom, has relatively low height, when the air outlet of the first gas-solid separator is located at the first gas-solid separator bottom, just
In the connection of the air inlet for the air outlet and fluidized bed denitration tower for realizing the first gas-solid separator, while shorten the circulation of flue gas
Distance reduces the thermal loss of flue gas, convenient for improving subsequent denitrating flue gas efficiency.
Still more preferably, the concrete structure of first gas-solid separator is cyclone separator.
It is further preferred that the solid outlet of first gas-solid separator is connect with the bottom of fluid-bed sweetening tower.Just
It is recycled in fluid-bed sweetening tower in by the powder activity carried in flue gas coke, avoids the waste of powder activity coke and to communicating pipe
Road results in blockage.
Preferably, the ammonia-gas spraying device is connect with the bottom of fluidized bed denitration tower.Flue gas self-fluidized type bed denitration after desulfurization
The bottom of tower flows up through fluidized bed denitration tower, and ammonia is added to the bottom of fluidized bed denitration tower, can extended by ammonia-gas spraying device
The time of contact of ammonia, powder activity coke and flue gas, convenient for improving the efficiency of activated coke catalysis ammonia nitrogen oxides reduction, and then
Improve the denitration efficiency of flue gas.
It is further preferred that the activated coke warehouse is connect with the middle part of fluidized bed denitration tower.By fresh powder activity
The middle part of burnt self-fluidized type bed denitrating tower is sprayed into fluidized bed denitration tower, and flue gas and ammonia and powder activity coke counter current contacting make work
Property coke catalysis ammonia nitrogen oxides reduction reaction rate gradually accelerate, it is easier to denitration efficiency is provided.
The another embodiment of the application provides the side for carrying out combined desulfurization and denitration to flue gas using above system
Method includes the following steps：
1) flue gas after dedusting is flowed into fluid-bed sweetening tower, the load sulphur activated coke and cloth that are detached with the first gas-solid separator
Powder activity coke contact after the catalysis of bag dust collector separation, by the sulfur dioxide adsorbing and removing in flue gas；
2) flue gas after desulfurization into fluidized bed denitration tower, and adds ammonia and powder thereto after gas solid separation
Activated coke, by the nitrogen oxides in powder activity coke catalysis ammonia reduction flue gas into nitrogen, so as to remove nitrogen oxides；
3) flue gas after denitration is sent to chimney, the first gas-solid point after flowing through the second gas-solid separator and bag filter separation
The load sulphur coke isolated from device, which is recycled in fluid-bed sweetening tower, to be recycled, the isolated cycle of the second gas-solid separator
Coke is recycled in fluidized bed denitration tower and recycles, and the powder activity coke after the isolated catalysis of bag filter is added to stream
Desulfurization is carried out in fluidized bed desulfurizing tower.
Preferably, in step 1), the temperature of flue gas is 90~120 DEG C.
Preferably, in step 2), dosage and the nitric oxide production molar ratio of flue gas of ammonia are (1~1.1)：1.
It is further preferred that in step 2), the temperature of flue gas is 90~120 DEG C in fluidized bed denitration tower.
Preferably, in step 3), the second gas-solid separator to the separative efficiency of the powder activity coke in flue gas for 80%~
90%.
The grain size of powder activity coke is less than 1mm, preferably 0.1~0.7mm.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool
The technical solution of the application is described in detail in the embodiment of body.
As shown in Figure 1, a kind of powdered activated coke combined desulfurization and the system of denitration, take off equipped with cyclone separator 1, fluid bed
Sulphur tower 2, inertia gas-solid separator, bag filter 3, fluidized bed denitration tower 4, activated coke warehouse 5, ammonia-gas spraying device 6.
Flue gas after boiler dust remover enters in fluid-bed sweetening tower 2 lives with the powder after carrying sulphur activated coke and being catalyzed
Property coke contact carry out desulfurization, the flue gas after desulfurization enter cyclone separator 1 carry out gas solid separation, the powder activity coke one under detaching
Part is sent fluid-bed sweetening tower 2 back to through activated coke charging gear and is recycled, a part as carry sulphur activated coke transmitting system into
Row regeneration, the activated coke after regeneration have fresh desulphurizing ability, send activated coke warehouse 5 back to；
Flue gas enters fluidized bed denitration tower 4 through the outlet of cyclone separator 1, and activated coke warehouse 5 is freshly prepared for storing
The powder activity for having fresh desulphurizing ability after powdered activated coke and completion desulfurization and regeneration is burnt, the grain size of fresh powder activated coke
Less than 1mm, powder activity coke is sent into fluidized bed denitration tower 4 through charging gear, and the ammonia that ammonia-gas spraying device 6 uniformly sprays into is lived in powder
Property coke catalysis under the action of by by the nitric oxide reduction in flue gas into nitrogen.Flue gas after denitration is followed by inertia gas-solid point
From chimney is discharged into after device and bag filter 3, inertia gas-solid separator is connect with fluidized bed denitration tower 4, by the cycle after separation
Coke is recycled to fluidized bed denitration tower 4 and recycles, and bag filter 3 is connect with fluid-bed sweetening tower 2, for by the catalysis detached
Activated coke afterwards adds into fluid-bed sweetening tower 2 sulfur dioxide adsorbed as adsorbent in flue gas.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of powdered activated coke combined desulfurization and the system of denitration, it is characterized in that, including fluid-bed sweetening tower, fluidized bed denitration
Tower, ammonia-gas spraying device, activated coke warehouse, the first gas-solid separator, the second gas-solid separator and bag filter, wherein,
The air inlet of the fluid-bed sweetening tower is connect with flue gas source, the gas outlet of fluid-bed sweetening tower and the first gas-solid separator
Air inlet connection, the gas outlet of the first gas-solid separator connect with the air inlet of fluidized bed denitration tower, fluidized bed denitration tower
Gas outlet is connect with the air inlet of the second gas-solid separator, the gas outlet of the second gas-solid separator and the air inlet of cloth bag separator
Connection, the solid outlet of the second gas-solid separator connect with the bottom of fluidized bed denitration tower, the solid outlet of cloth bag separator and
The bottom connection of fluid-bed sweetening tower；
Activated coke warehouse is connect with fluidized bed denitration tower, and ammonia-gas spraying device is connect with fluidized bed denitration tower；Ammonia is in powder activity coke
Catalytic action under the nitrogen oxides in the flue gas after desulfurization is reduced into nitrogen, so as to carry out denitration；In flue gas after denitration
The powder activity coke of carrying is detached successively by the second gas-solid separator and cloth bag separator, is separately recovered to fluidized bed denitration and stream
It is recycled in fluidized bed desulfurizing tower.
2. the system as claimed in claim 1, it is characterized in that, first gas-solid separator is cyclone separator.
3. system as claimed in claim 2, it is characterized in that, the air outlet of first gas-solid separator is located at the first gas-solid point
Bottom from device；
Preferably, the concrete structure of first gas-solid separator is cyclone separator.
4. system as claimed in claim 2, it is characterized in that, the solid outlet and fluid-bed sweetening of first gas-solid separator
The bottom connection of tower.
5. system as claimed in claim 2, it is characterized in that, the ammonia-gas spraying device is connect with the bottom of fluidized bed denitration tower.
6. system as claimed in claim 5, it is characterized in that, the activated coke warehouse is connect with the middle part of fluidized bed denitration tower.
7. the method that combined desulfurization and denitration are carried out to flue gas using any system of claim 1~6, including walking as follows
Suddenly：
1) flue gas after dedusting is flowed into fluid-bed sweetening tower, and the load sulphur activated coke and cloth bag that are detached with the first gas-solid separator are removed
Powder activity coke contact after the catalysis of dirt device separation, by the sulfur dioxide adsorbing and removing in flue gas；
2) flue gas after desulfurization into fluidized bed denitration tower, and adds ammonia and powder activity thereto after gas solid separation
Coke, by the nitrogen oxides in powder activity coke catalysis ammonia reduction flue gas into nitrogen, so as to remove nitrogen oxides；
3) flue gas after denitration is sent to chimney, the first gas-solid separator after flowing through the second gas-solid separator and bag filter separation
Isolated load sulphur coke, which is recycled in fluid-bed sweetening tower, to be recycled, and the isolated cycle coke of the second gas-solid separator returns
It receives into fluidized bed denitration tower and recycles, the powder activity coke after the isolated catalysis of bag filter is added to fluid bed
Desulfurization is carried out in desulfurizing tower.
8. the method for claim 7, it is characterized in that, in step 1), the temperature of flue gas is 90~120 DEG C.
9. the method for claim 7, it is characterized in that, in step 2), the dosage of ammonia with flue gas is nitric oxide production rubs
You are than being (1~1.1):1；
Preferably, in step 2), the temperature of flue gas is 90~120 DEG C in fluidized bed denitration tower.
10. the method for claim 7, it is characterized in that, in step 3), the second gas-solid separator lives to the powder in flue gas
Property burnt separative efficiency be 80%~90%.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012010A (en) * | 2018-09-07 | 2018-12-18 | 山东大学 | A kind of bubbling fluidization bed apparatus carrying sulphur activated coke desorption and regeneration for powdery |
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| CN112121591A (en) * | 2020-07-24 | 2020-12-25 | 中国科学院过程工程研究所 | Low-temperature flue gas activated carbon and catalytic filter tube composite purification process and application thereof |
| CN114367193A (en) * | 2022-01-24 | 2022-04-19 | 哈尔滨工业大学 | Efficient low-temperature combined desulfurization and denitrification system and method based on active coke function partition |
| CN117065542A (en) * | 2023-09-26 | 2023-11-17 | 河北炳岩新材科技有限公司 | Desulfurization equipment is used in production of green metal steel casting |
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